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Kazeer [188]
3 years ago
6

Find the indicated sum of the geometric series. ∑6k=1−3(2)k−1

Mathematics
1 answer:
pentagon [3]3 years ago
6 0
\displaystyle\sum_{k=1}^63\times2^{k-1}=3\frac{1-2^6}{1-2}=189

Or, if that hyphen between the lower index and 3 is actually a negative sign, then the sum is -189.
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